Antminer S21 vs Canaan AvalonMiner 1246
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 | Specification | Canaan AvalonMiner 1246 |
|---|---|---|
| 200.0 TH/s | Hashrate | 90.0 TH/s |
| 3,500 W | Power Consumption | 3,420 W |
| 17.5 J/TH | Efficiency | 38.0 J/TH |
| 75 dB | Noise Level | — |
| 14.6 kg | Weight | 12,800.0 kg |
| 11,942 BTU/hr | BTU Output | 11,669 BTU/hr |
| 36/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Antminer S21
Canaan AvalonMiner 1246
Based on BTC price of $78,248 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S21 wins on 4 of 6 factors (efficiency, hashrate, home mining score, noise level). Its biggest concrete edge: 122% more hashrate (200.0 vs 90.0 TH/s). The Canaan AvalonMiner 1246 holds the edge in power consumption and price-performance. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Here is every spec where the Antminer S21 and Canaan AvalonMiner 1246 actually differ, with the gap quantified:
- Antminer S21 122% more hashrate (200.0 vs 90.0 TH/s)
- Canaan AvalonMiner 1246 2% better power draw (3,500 vs 3,420 W)
- Antminer S21 54% better efficiency (17.5 vs 38.0 J/TH)
- Antminer S21 100% better weight (14.6 vs 12,800.0 kg)
- Antminer S21 2% more heat output (11,942 vs 11,669 BTU/hr)
- Antminer S21 64% more home mining score (36.0 vs 22.0)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Antminer S21 | Metric | Canaan AvalonMiner 1246 |
|---|---|---|
| $5,500 | Upfront cost (MSRP) | $241 |
| -$1.20 | Daily net profit | -$4.97 |
| -$5,937 | Net after 1 year | -$2,054 |
| -$6,375 | Net after 2 years | -$3,867 |
| -$6,812 | Net after 3 years | -$5,680 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Antminer S21Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer S2117.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer S21 or the Canaan AvalonMiner 1246?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 is more profitable at $-1.20/day compared to $-4.97/day for the Canaan AvalonMiner 1246. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer S21 or Canaan AvalonMiner 1246?
The Antminer S21 is quieter at 75 dB compared to the Canaan AvalonMiner 1246 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer S21 or Canaan AvalonMiner 1246?
The Antminer S21 scores 36/100 on our Home Mining Score (vs 22/100 for the Canaan AvalonMiner 1246). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer S21 and Canaan AvalonMiner 1246 on J/TH?
The Antminer S21 runs at 17.5 J/TH while the Canaan AvalonMiner 1246 runs at 38.0 J/TH — a difference of 20.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 54% better efficiency (17.5 vs 38.0 J/TH).